mcpo

Overview

mcpo is a lightweight proxy that bridges the gap between MCP servers and OpenAPI-compatible systems. It transforms MCP tool calls into standard RESTful APIs, providing security, documentation, and compatibility with existing tool ecosystems. The server supports multiple MCP server types including stdio, SSE, and streamable HTTP, with authentication options including OAuth 2.1. By auto-generating OpenAPI schemas, it eliminates the need for custom protocol development and enables instant integration with LLM agents and applications expecting standard HTTP interfaces.

Try asking AI

After installing, here are 6 things you can ask your AI assistant:

Comparable tools

Installation

# Using uv (recommended)
uvx mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command

# Using pip
pip install mcpo
mcpo --port 8000 --api-key "top-secret" -- your_mcp_server_command

docker run -p 8000:8000 ghcr.io/open-webui/mcpo:main --api-key "top-secret" -- your_mcp_server_command

{
  "mcpServers": {
    "mcpo-proxy": {
      "command": "uvx",
      "args": ["mcpo", "--port", "8000", "--api-key", "top-secret", "--", "your_mcp_server_command"]
    }
  }
}

FAQ

What MCP server types does mcpo support?

mcpo supports three MCP server types: stdio (default), SSE (Server-Sent Events), and streamable HTTP. Each type can be specified using the --server-type flag.

How does mcpo handle authentication?

mcpo supports multiple authentication methods including API keys (--api-key flag) and OAuth 2.1. For OAuth, it performs dynamic client registration and handles the entire OAuth flow automatically.

Can mcpo serve multiple MCP tools simultaneously?

Yes, mcpo can serve multiple MCP tools through a configuration file following the Claude Desktop format. Each tool gets its own route and OpenAPI schema, and hot-reload is supported for automatic updates.

Compare mcpo with